*focals are defined as follows: 
*focal 6 = joined a rotator department but did not overlap with rotator because they changed university (control group 1)
*focal 7 = joined a rotator department but did not overlap with rotator because the rotator changed university (control group 1)
*focal 0 = same advisor but worked in a department without a returning rotator (control group 2)
*focal 3 = different department in a university with a rotator (control group 3)
*focal 1 = joined department the year the rotator left for the NSF or afterwards (treatment group)
*focal 4 = joined department before the rotator left for the NSF (treatment group)
*focal 8 = left a few years after the rotator returned (treatment group)

by group, sort : summarize previous yearly total male post hindex nonnsf years first
